These Lithco Plastic Jogger Blocks are designed to hold you paper safely in the cutter, with a strong magnetic base firmly holding the stack of papers against side gauge during the cutting process. Manufactured from heavy duty Kimoplastic, these strong and durable jogger blocks will help you keep the paper stock in place so you can achieve perfect, square cuts. Order the size you need from the ones listed below. We carry the 3'' x 8'', 3'' x 10'', 4'' x 8'', 4'' x 10'' and 4'' x 12''. As always, you'll receive only quality products at a great price from MyBinding.